creddit: Pass parameters to run.sh to creddit

Small patch to run.sh so that the parameters sent to run.sh get sent to
creddit. So. Ex. you can do this:

./run.sh /r/programming

And that will call creddit with:

./creddit /r/programming
creddit: Fix printing issue

This patch fixes a printing issue were the screen wasn't always being
cleared when a Link or Comment's text was open.
libreddit: Move Reddit.com strings into constants

This patch moves the constant strings used for Reddit.com into global.h.
Nothing major, but it provides an easy place to see all the API pages
used and how everything fits together.
Merge pull request #52 from DSMan195276/various-fixes

creddit: libreddit: Various fixes and clean-ups